Data transmission method, device, and storage medium

ABSTRACT

The present disclosure provides a data transmission method, a device and a storage medium, and relates to the technical field of mobile communication. The method includes: monitoring a first physical downlink control channel (PDCCH) according to a first PDCCH monitoring mode; and determining, according to a monitoring result of the first PDCCH and first time information, ending time of monitoring the first PDCCH according to the first PDCCH monitoring mode.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation application of International PCTApplication No. PCT/CN2019/087470 filed on May 17, 2019, the entirecontent of which is hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to the technical field of mobilecommunication, in particular to a data transmission method, a device anda storage medium.

BACKGROUND

An unlicensed spectrum is a kind of shared spectrum. In order to makeeach communication device coexist amicably on unlicensed spectrum, somecountries or regions stipulate the legal requirements that need to bemet when using the unlicensed spectrum. For example, it is necessary tofollow the principle of monitoring before using, and the period of thetransmission should not exceed the maximum occupation time of thechannel in one data transmission, so as to realize the datatransmission.

After preempting a channel through monitoring, an access network devicesends, using a PDCCH (Physical Downlink Control CHannel), indicationinformation of COT (Channel Occupation Time) including COT startingtime, COT ending time, the number of time slots in COT, etc. Then, theaccess network device sends scheduling information using the PDCCH.Generally, UE (User Equipment) monitors the PDCCH in a PDCCH monitoringmode with a small monitoring time occasion interval so as to listen toCOT indication information. After the COT indication information ismonitored, the UE enters into another channel receiving phase accordingto the COT indication information. In other words, from the startingposition of the first time slot after the COT starting time to the COTending time, the UE monitores the PDCCH by using a PDCCH monitoring modewith a large monitoring time occasion interval, so as to receive thescheduling information sent by the access network device, therebyreceiving data according to the scheduling information. In addition,when the monitorion time reaches the ending time of COT, the UE isswitched back occasion to monitore the PDCCH in a PDCCH monitoring modewith a smaller monitoring time interval.

However, no matter which PDCCH monitoring mode is currently used by theUE to monitor a PDCCH, when the UE has not detected COT indicationinformation, it will always use the current PDCCH monitoring mode tomonitor, that is, it will never be switched to other phases forreceiving a channel. This results in the failure of data transmissionbetween the access network device and the UE.

SUMMARY

Implementations of the present disclosure provide a data transmissionmethod, a device, and a storage medium.

In one aspect, a data transmission method is provided, which is appliedto UE, and the method includes: monitoring a first physical downlinkcontrol channel (PDCCH) according to a first PDCCH monitoring mode; anddetermining, according to a monitoring result of the first PDCCH andfirst time information, ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the first timeinformation includes first period, and the first period is determined byreceived first configuration information or predefined.

In a possible implementation of the present disclosure, a starting pointof the first period is determined by target monitoring occasion formonitoring the first PDCCH according to the first PDCCH monitoring mode,wherein the first PDCCH carrying a common DCI is not detected or thefirst PDCCH carrying a target DCI is detected at the target monitoringoccasion.

In a possible implementation of the present disclosure, the methodfurther includes: acquiring a target DCI carried by the first PDCCH whenthe first PDCCH is detected by the first PDCCH monitoring mode; anddetermining the first time information according to the target DCI.

In a possible implementation of the present disclosure, determining thefirst time information according to the target DCI includes: determiningthe first time information according to scheduling information when thetarget DCI is used for scheduling data, wherein the schedulinginformation is carried by the target DCI or determined by the receivedsecond configuration information.

In a possible implementation of the present disclosure, when the targetDCI is used for scheduling a physical downlink shared channel (PDSCH),determining the first time information according to schedulinginformation includes: acquiring a first parameter value indicating thenumber of time slots between a PDCCH and a PDSCH and a second parametervalue indicating the number of time slots between a PDSCH and a physicaluplink control channel (PUCCH) in the scheduling information; anddetermining the first time information according to the first parametervalue and the second parameter value.

In a possible implementation of the present disclosure, when the targetDCI is used for scheduling a physical uplink shared channel (PUSCH),determining the first time information according to schedulinginformation includes: acquiring a third parameter value used forindicating the number of offset time slots between a time slot where thetarget DCI is located and a time slot where PUSCH is located in thescheduling information; and determining the first time informationaccording to the third parameter value.

In a possible implementation of the present disclosure, determining thefirst time information according to the target DCI includes: determiningthe first time information according to indication information in thetarget DCI.

In a possible implementation of the present disclosure, the indicationinformation is second period, the second period is used for determiningthe first time information, and the second period is any one of at leastone second period predefined.

In a possible implementation of the present disclosure, determining,according to the monitoring result of the first PDCCH and the first timeinformation, the ending time of monitoring the first PDCCH according tothe first PDCCH monitoring mode, includes: when the first timeinformation is used for indicating a first moment, if channel occupationtime (COT) indication information is not received on the first PDCCHwhen the first moment arrives, determining that the first moment is theending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

In a possible implementation of the present disclosure, the methodfurther includes: monitoring a second PDCCH according to a second PDCCHmonitoring mode after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

In another aspect, a device is provided, the device includes a processorand a memory, the memory stores at least one instruction, and the atleast one instruction is used for being executed by the processor toimplement any of the data transmission method described in the above oneaspect.

In another aspect, a computer-readable storage medium is provided, andthe computer-readable storage medium stores an instruction, whenexecuted by a processor, enabling the processor to implement any of thedata transmission method described in the above one aspect.

In another aspect, a computer program product including an instructionis provided. The computer program product, when running on a computer,causes the computer to execute any of the data transmission methoddescribed in above one aspect.

In another aspect, a data transmission method is provided, applied toUE, and the method includes: monitoring a demodulation reference signal(DMRS); and determining, according to a monitoring result of the DMRSand second time information, ending time of monitoring a first PDCCHaccording to a first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the second timeinformation is determined by received third configuration information orpredefined.

In a possible implementation of the present disclosure, determining,according to the monitoring result of the DMRS and the second timeinformation, the ending time of monitoring the first PDCCH according tothe first PDCCH monitoring mode, includes: when the second timeinformation is used for indicating a second moment, if the DMRS isdetected, determining that the second moment is the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the methodfurther includes: monitoring a DMRS according to a target monitoringmode after the ending time of monitoring the first PDCCH according tothe first PDCCH monitoring mode.

In another aspect, a device is provided, the device includes a processorand a memory, the memory stores at least one instruction, and the atleast one instruction is used for being executed by the processor toimplement any of the data transmission method described in the aboveanother aspect.

In another aspect, a computer-readable storage medium is provided, andthe computer-readable storage medium stores an instruction, whenexecuted by a processor, enabling the processor to implement any of thedata transmission method described in the above another aspect.

In another aspect, a computer program product including an instructionis provided. The computer program product, when running on a computer,causes the computer to execute any of the data transmission methoddescribed in the above another aspect.

In another aspect, an apparatus of data transmission configured in UE isprovided, and the method includes: a first monitorion module and a firstdetermining module.

The first monitorion module is configured to monitor a first physicaldownlink control channel (PDCCH) according to a first PDCCH monitoringmode.

The first determining module is configured to determine, according to amonitoring result of the first PDCCH and first time information, endingtime of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

In a possible implementation of the present disclosure, the first timeinformation includes first period, and the first period is determined byreceived first configuration information or predefined.

In a possible implementation of the present disclosure, a starting pointof the first period is determined by target monitoring occasion formonitoring the first PDCCH according to the first PDCCH monitoring mode,wherein the first PDCCH carrying a common DCI is not detected or thefirst PDCCH carrying a target DCI is detected at the target monitoringoccasion.

In a possible implementation of the present disclosure, the firstdetermining module is further configured to: acquire a target DCIcarried by the first PDCCH when the first PDCCH is detected by the firstPDCCH monitoring mode; and determine the first time informationaccording to the target DCI.

In a possible implementation of the present disclosure, the firstdetermining module is configured to: determining the first timeinformation according to scheduling information when the target DCI isused for scheduling data, wherein the scheduling information is carriedby the target DCI or determined by the received second configurationinformation.

In a possible implementation of the present disclosure, the firstdetermining module is configured to: when the target DCI is used forscheduling a physical downlink shared channel (PDSCH), acquire a firstparameter value indicating the number of time slots between a PDCCH anda PDSCH and a second parameter value indicating the number of time slotsbetween a PDSCH and a physical uplink control channel (PUCCH) in thescheduling information; and determine the first time informationaccording to the first parameter value and the second parameter value.

In a possible implementation of the present disclosure, the firstdetermining module is configured to: when the target DCI is used forscheduling a physical uplink shared channel (PUSCH), acquire a thirdparameter value used for indicating the number of offset time slotsbetween a time slot where the target DCI is located and a time slotwhere PUSCH is located in the scheduling information; and determine thefirst time information according to the third parameter value.

In a possible implementation of the present disclosure, the firstdetermining module is configured to: determine the first timeinformation according to indication information in the target DCI.

In a possible implementation of the present disclosure, the indicationinformation is second period, the second period is used for determiningthe first time information, and the second period is any one of at leastone period predefined.

In a possible implementation of the present disclosure, the firstdetermining module is configured to: when the first time information isused for indicating a first moment, if channel occupation time (COT)indication information is not received on the first PDCCH when the firstmoment arrives, determine that the first moment is the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the firstmonitorion module is further configured to: monitore a second PDCCHaccording to a second PDCCH monitoring mode after the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

In another aspect, an apparatus of data transmission configured in UE isprovided, and the method includes: a second monitorion module and asecond determining module.

The second monitorion module is configured to monitore a demodulationreference signal (DMRS).

The second determining module is configured to determine, according to amonitoring result of the DMRS and second time information, ending timeof monitoring a first PDCCH according to a first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the second timeinformation is determined by received third configuration information orpredefined.

In a possible implementation of the present disclosure, the seconddetermining module is configured to: when the second time information isused for indicating a second moment, if the DMRS is detected, determinethat the second moment is the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the secondmonitorion module is further configured to: monitor a DMRS according toa target monitoring mode after the ending time of monitoring the firstPDCCH according to the first PDCCH monitoring mode.

BRIEF DESCRIPTION OF DRAWINGS

To describe technical solutions in implementations of the presentdisclosure more clearly, drawings that need to be used in thedescription of the implementations will be briefly introduced below. Itis apparent that the drawings described below are only someimplementations of the present disclosure, and for those of ordinaryskill in the art, other drawings may be obtained according to thesedrawings without paying an inventive effort.

FIG. 1 is a schematic diagram of implementation environment according toan exemplary implementation of the present disclosure;

FIG. 2 is a schematic diagram of phases where UE receives a channelaccording to an exemplary implementation of the present disclosure;

FIG. 3 is a flowchart of a data transmission method according to anexemplary implementation of the present disclosure;

FIG. 4 is a flowchart of a data transmission method according to anotherexemplary implementation of the present disclosure;

FIG. 5 is a schematic diagram of phases where UE receives a channelaccording to another exemplary implementation of the present disclosure;

FIG. 6 is a flowchart of a data transmission method according to anotherexemplary implementation of the present disclosure;

FIG. 7 is a schematic diagram of phases where UE receives a channelaccording to another exemplary implementation of the present disclosure;

FIG. 8 is a schematic diagram of phases where UE receives a channelaccording to another exemplary implementation of the present disclosure;

FIG. 9 is a flowchart of a data transmission method according to anotherexemplary implementation of the present disclosure;

FIG. 10 is a flowchart of a data transmission method according toanother exemplary implementation of the present disclosure;

FIG. 11 is a flowchart of a data transmission method according toanother exemplary implementation of the present disclosure;

FIG. 12 is a schematic diagram of phases where UE receives a channelaccording to another exemplary implementation of the present disclosure;

FIG. 13 is a schematic structural diagram of an apparatus of datatransmission according to an exemplary implementation of the presentdisclosure;

FIG. 14 is a schematic structural diagram of an apparatus of datatransmission according to an exemplary implementation of the presentdisclosure; and

FIG. 15 is a schematic structural diagram of a device according toanother exemplary implementation of the present disclosure.

DETAILED DESCRIPTION

Before introducing a data transmission method provided by animplementation of the present disclosure in detail, terms,implementation environment and application scenarios related to theimplementation of the present disclosure are first introduced.

First, the terms related to the implementations of the presentdisclosure are introduced.

Unlicensed Spectrum: an unlicensed spectrum is generally considered as ashared spectrum. In other words, communication devices in differentcommunication systems can use the unlicensed spectrum as long as theymeet the regulatory requirements set by countries or regions on theunlicensed spectrum, without applying for exclusive spectrumauthorization from the government.

PDCCH: a PDCCH is a set of physical resource particles, which can beused for carrying DCI (Downlink Control Information) and COT indicationinformation. According to its different functional fields, controlinformation carried in a PDCCH channel includes common controlinformation and dedicated control information.

Search Space: a search space defines a starting position of UE blindmonitorion and the search mode of a PDCCH.

Control Resource Set (CORESET): a control resource set is a kind oftime-frequency resource set, and UE performs PDCCH monitorioin on thecorresponding control resource set. A control resource set consists of aset of REGs (Resource Element Groups).

Secondly, implementation environment related to an implementation of thepresent disclosure is briefly introduced.

Please refer to FIG. 1, FIG. 1 is a schematic diagram of implementationenvironment according to an exemplary implementation. A datatransmission method provided by an implementation of the presentdisclosure can be applied to the implementation environment shown inFIG. 1. The implementation environment mainly includes UE 110 and anaccess network device 120. The communication between the UE 110 and theaccess network device 120 can be realized using a mobile communicationnetwork.

The access network device 120 can be used for PDCCH channeltransmission. Exemplarily, the access network device 120 may sendinformation for data scheduling on the PDCCH channel to indicate how theUE 110 performs data transmission of context. As an example, in theNR(New Radio) system, the access network device may be an eNB(evolutional Node B), etc., which is not limited in the implementationof the present disclosure.

The UE 110 is mainly used for executing the data transmission methodprovided in the implementation of the present disclosure. For example,the UE may be used for monitoring a PDCCH according to a PDCCHmonitoring mode configured by the access network device 120 andreceiving scheduling data transmitted by the PDCCH, so as to realizecontext data transmission.

Next, the application scenario related to the implementation of thepresent disclosure is briefly introduced.

The data transmission method provided by the implementation of thepresent disclosure is applied to a channel scene of an unlicensedspectrum. In order to make each communication system using an unlicensedspectrum for wireless communication coexist amicably on the unlicensedspectrum, some countries or regions have stipulated the legalrequirements that must be met when using the unlicensed spectrum. Forexample, the principle of “LBT” (Listen-Before-Talk) needs to befollowed, that is, a communication device needs to listen to a channelfirst before sending signals on an unlicensed spectrum channel. Onlywhen the channel monitoring result is that the channel is idle, thecommunication device can send signals. If the channel monitoring resultof the communication device on the channel of the unlicensed spectrum isthat the channel is busy, the communication device cannot perform signaltransmission. In addition, in order to ensure fairness, in onetransmission, the period of signal transmission by the communicationdevice using the unlicensed spectrum channel cannot exceed MCOT (MaximumChannel Occupation Time).

Herein, the access network device can perform channel transmission aftersuccessfully preempting a channel. For UE, the reception of a downlinkchannel generally includes three phases: Phase A, Phase B and Phase C,and channel monitoring opportunities in different phases may bedifferent. As shown in FIG. 2, next, the three phases are brieflyintroduced respectively:

Phase A: At this phase, in order to obtain COT indication information assoon as possible, UE will generally listen to a PDCCH at a monitoringoccasion with a small interval. For example, the mini-slot basedmonitoring occasion may be used for monitoring, that is, the monitoringperiod is less than one slot.

Phase B: When the UE detects the COT indication information, it can bedetermined that the access network device is in the COT. As shown inFIG. 2, the phase from the COT to the starting position of the firsttime slot is Phase B. As an example, in Phase B, the UE can continue touse the PDCCH monitoring mode of Phase A to monitor the PDCCH, which isnot limited here.

Phase C: Phase C refers to the starting position of the first time slotin the COT to the end of the COT. In this Phase C, the UE listens to thePDCCH at a monitoring occasion with a long interval. For example, theslot based monitoring occasion may be used for monitoring, that is, themonitoring period is greater than or equal to one time slot. Inaddition, at this phase, the UE receives the scheduling information sentby the access network device, so as to perform uplink and downlink datatransmission.

Therefore, UE needs to determine the timing of switching from one phaseto another according to the COT indication information. However, if theUE misses monitoring the COT indication information, it cannot normallyenter other channel monitorion phases, for example, it cannot enterPhase A from Phase C. Therefore, an implementation of the presentdisclosure provides a data transmission method. The method can solvethis problem. Please refer to the following implementations for specificimplementation.

After introducing the application scenarios and implementationenvironments related to the implementations of the present disclosure,the data transmission method provided by the implementation of thepresent disclosure will be described in detail with reference to theattached drawings.

Please refer to FIG. 3, which is a flow chart of a data transmissionmethod according to an exemplary implementation. The data transmissionmethod can be applied to the implementation environment shown in FIG. 1,and the data transmission method can include the followingimplementation acts: act 301 and act 302.

In act 301, a first PDCCH is monitored according to a first PDCCHmonitoring mode.

As an example, a PDCCH monitoring period of a search space correspondingto the first PDCCH monitoring mode is greater than or equal to one timeslot. For example, a monitoring occasion interval corresponding to thefirst PDCCH monitoring mode includes M time slots, and M>0. It can alsobe considered that the first PDCCH monitoring mode is a slot basedmonitoring occasion mode, that is, the monitoring occasion interval isin units of time slots. In this case, the monitoring occasion intervalof the UE is large, that is to say, the first PDCCH monitoring mode isnot frequent monitoring, and it is generally considered that the UE isin Phase C in this case.

The monitoring result of the first PDCCH may include various situations,for example, the first PDCCH may or may not be detected. Further, whenthe first PDCCH is detected, the first PDCCH may or may not carry COTindication information, or may further carry DCI for data scheduling.

In act 302, ending time of monitoring the first PDCCH according to thefirst PDCCH monitoring mode is determined according to a monitoringresult of the first PDCCH and first time information.

As an example, the first time information can be used for indicating thefinal ending time of monitoring the first PDCCH according to the firstPDCCH monitoring mode. In addition, as for the specific ending time whenthe first PDCCH is monitored according to the first PDCCH monitoringmode, it can be determined by combining the monitoring result of thefirst PDCCH.

As an example, determining, according to the monitoring result of thefirst PDCCH and the first time information, the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode,includes: when the first time information is used for indicating a firstmoment, if channel occupation time (COT) indication information is notreceived on the first PDCCH when the first moment arrives, determiningthat the first moment is the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

That is to say, when the COT indication information has not beenreceived on the first PDCCH before the first moment arrives, and the COTindication information has not been received on the first PDCCH when thefirst moment arrives, it means that the UE may have missed themonitorion or the access network device has not sent the COT indicationinformation. In this case, the channel can be monitored by another PDCCHmonitoring mode, and the current first PDCCH monitoring mode can beended. In other words, it is determined that the first moment is theending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode, thereby the first PDCCH monitoring mode is ended.

It should be noted that the first time information is only taken asexample of indicating the first moment in the above. In anotherimplementation, the first time information can also be used forindicating a period. In this case, if the COT indication information hasnot been received on the first PDCCH within the first period, it isdetermined that the end point of the period indicated by the first timeinformation is the ending time of monitoring the first PDCCH.

As an example, a second PDCCH is monitored according to a second PDCCHmonitoring mode after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

Herein, the second PDCCH monitoring mode is different from the firstPDCCH monitoring mode. As an example, the difference between the secondPDCCH monitoring mode and the first PDCCH monitoring mode can be any ofthe following cases:

In the first case, the first PDCCH monitoring mode and the second PDCCHmonitoring mode correspond to different search spaces.

In other words, the first PDCCH monitoring mode and the second PDCCHmonitoring mode is used for monitorions in different search spaces ordifferent CORESETs the search space or CORESET for monitorion in thefirst PDCCH monitoring mode is different from that in the second PDCCHmonitoring mode, for example, the first PDCCH monitoring mode is usedfor monitorions in the first search space of the PDCCH, and the secondPDCCH monitoring mode is used for monitorions in the second search spaceof the PDCCH.

In the second case, the first PDCCH monitoring mode and the second PDCCHmonitoring mode correspond to different PDCCH monitoring periods in thesame search space.

In this implementation, the first PDCCH monitoring mode and the secondPDCCH monitoring mode can correspond to the same search space, butmonitoring periods of the two monitoring modes are different, so thatthe first PDCCH monitoring mode is different from the second PDCCHmonitoring mode.

As an example, a PDCCH monitoring period of a search space correspondingto the second PDCCH monitoring mode is less than one time slot. Forexample, a monitoring occasion interval corresponding to the secondPDCCH monitoring mode includes N symbols, and 0<N<7. It can also be saidthat the second PDCCH monitoring mode is a mini-slot-based monitoringoccasion mode, that is, the monitoring occasion interval is in units ofsymbols. In this case, the UE actually listens to the PDCCH in afrequent monitoring mode, and it can generally be considered that the UEis switched into Phase A.

In addition, the first PDCCH monitoring mode and the second PDCCHmonitoring mode may be pre-configured to the UE by the access networkdevice. As an example, the first PDCCH monitoring mode and the secondPDCCH monitoring mode may be configured to the UE by the access networkdevice after random access of the UE.

As an example, an implementation of monitoring the second PDCCHaccording to the second PDCCH monitoring mode may include the following:the UE monitors the second PDCCH using the second PDCCH monitoring modeat the boundary of the first time slot after the determined ending time,that is to say, the time of switching to the second PDCCH monitoringmode may be the boundary of the first time slot after the determinedending time, or in another word, the boundary of the earliest time slotafter the determined ending time. The boundary of the first time slotafter the ending time can be determined by the PDCCH monitoring occasioncorresponding to the second PDCCH monitoring mode.

As an example, when receiving the COT indication information before thetime indicated by the first time information arrives, the UE maydetermine, according to the COT indication information, the ending timeof monitoring the first PDCCH according to the first PDCCH monitoringmode. Optionally, when receiving the COT indication information beforethe time indicated by the first time information arrives, the UE mayalso continue to determine, according to the time indicated by the firsttime information, the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode. This is not specificallylimited in the implementation of the present disclosure.

In an implementation of the present disclosure, a first PDCCH ismonitored according to a first PDCCH monitoring mode, and ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring modeis determined according to a monitoring result of the first PDCCH andfirst time information. In other words, the switch of the PDCCHmonitoring mode is determined according to the monitoring result and thefirst time information instead of relying solely on the COT indicationinformation, so that the problem that UE cannot enter another channelreceiving phase due to missing monitoring the COT indication informationand other reasons can be avoided, and the probability of successful datatransmission is improved.

Please refer to FIG. 4, which is a flow chart of a data transmissionmethod according to another exemplary implementation. The datatransmission method can be applied to the implementation environmentshown in FIG. 1, and the data transmission method can include thefollowing implementation acts: act 401 and act 402.

In act 401, a first PDCCH is monitored according to a first PDCCHmonitoring mode.

As an example, a PDCCH monitoring period of a search space correspondingto the first PDCCH monitoring mode is greater than or equal to one timeslot. For example, a monitoring occasion interval corresponding to thefirst PDCCH monitoring mode includes M time slots, and M>0. It can alsobe considered that the first PDCCH monitoring mode is a slot basedmonitoring occasion mode, that is, the monitoring occasion interval isin units of time slots. In this case, the monitoring occasion intervalof the UE is large, that is to say, the second PDCCH monitoring mode isnot of frequent monitoring. It is generally considered that the UE is inPhase C in this case, that is, the UE may need to be switched from PhaseC to Phase A.

The monitoring result of the first PDCCH may include various situations,for example, the first PDCCH may or may not be detected. Optionally,when the first PDCCH is detected, the first PDCCH may or may not carryCOT indication information, or may also carry DCI for data scheduling.

In act 402, ending time of monitoring the first PDCCH according to thefirst PDCCH monitoring mode is determined according to a monitoringresult of the first PDCCH and first time information.

As an example, the first time information includes first period, and thefirst period is determined by received first configuration informationor predefined.

When the first period is determined by the received first configurationinformation, the first configuration information may carry the firstperiod, and the first configuration information is sent by the accessnetwork device. As an example, the first configuration information maybe, but is not limited to, RRC (Radio Resource Control) signaling andbroadcast information, which is not limited by the implementation of thepresent disclosure.

It should be noted that the above description only takes the firstperiod determined by received first configuration information orpredefined as an example. In another implementation, the first periodcan also be determined according to a preset rule, which is not limitedby the implementation of the present disclosure.

As an example, a starting point of the first period is determined bytarget monitoring occasion for monitoring the first PDCCH according tothe first PDCCH monitoring mode, wherein the first PDCCH carrying acommon DCI is not detected or the first PDCCH carrying a target DCI isdetected at the target monitoring occasion.

As an example, the common DCI includes COT indication information. Inother words, the first PDCCH carrying common DCI being not detected bythe UE at the target monitoring occasion includes the first PDCCHcarrying the COT indication information being not detected by the UE atthe target monitoring occasion. In this case, the starting point of thefirst period is determined according to the target monitoring occasion.

As an example, the target DCI includes a DCI for data scheduling, andthe target DCI can also be called a UE-specific DCI and does not includeCOT indication information. In other words, the UE detecting the firstPDCCH carrying the target DCI at the target monitoring occasion includesthe UE detecting the first PDCCH carrying the DCI for data scheduling atthe target monitoring occasion. In other words, the UE may detect thefirst PDCCH at the target monitoring occasion, but the first PDCCHcarries the DCI for data scheduling. In this case, the starting point ofthe first period is determined according to the target monitoringoccasion.

Exemplarily, the starting point of the first period is the ending timepoint of the symbol of the last control resource set of the targetmonitoring occasion indicated by the first PDCCH monitoring mode. Forexample, please refer to FIG. 5, the starting point of the first periodis the moment A in FIG. 5.

As an example, the specific implementation of determining, according tothe monitoring result of the first PDCCH and the first time information,the ending time of monitoring the first PDCCH according to the firstPDCCH monitoring mode, may include: determining that the end point ofthe first period is the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode when the end point of thefirst period arrives, and the channel occupation time (COT) indicationinformation has not been received on the first PDCCH.

For example, please refer to FIG. 5, from the starting point of thefirst period, the UE performs time counting, and the UE monitors thefirst PDCCH by using the first PDCCH monitoring mode when the countedtime does not exceed the first period. The time counting operation canbe terminated if COT indication information is detected or if a GC-PDCCH(Group Common PDCCH) carrying COT indication information is detected. Inthis case, the UE can determine, according to the COT indicationinformation, the ending time of monitoring the first PDCCH according tothe first PDCCH monitoring mode.

On the contrary, when the counted time reaches the first period and COTindication information has not been received in the first period, itmeans that the access network device may not successfully preempt thechannel or the UE misses monitoring the first PDCCH. In this case, whenthe counted time reaches the first period, for example, when the momentB reaches the first period as referred in FIG. 5, the UE determines,under such a situation, that the end point of the first period is theending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

In act 403, a second PDCCH is monitored according to a second PDCCHmonitoring mode after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

As an example, please refer to FIG. 5, the UE monitors the second PDCCHby the second PDCCH monitoring mode at the boundary of the first timeslot after the first period. In other words, the timing of switching tothe second PDCCH monitoring mode may be the boundary of the first timeslot after the determined ending time, or the boundary of the earliesttime slot after the determined ending time. The boundary of the firsttime slot after the first period can be determined by the second PDCCHmonitoring occasion determined by the second PDCCH monitoring mode.

In an implementation of the present disclosure, a first PDCCH ismonitored according to a first PDCCH monitoring mode, and ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring modeis determined according to a monitoring result of the first PDCCH andfirst time information. In other words, the switch of the PDCCHmonitoring mode is determined according to the monitoring result and thefirst time information instead of relying solely on the COT indicationinformation, so that the problem that UE cannot enter another channelreceiving phase due to missing monitoring the COT indication informationand other reasons can be avoided, and the probability of successful datatransmission is improved.

Please refer to FIG. 6, which is a flow chart of a data transmissionmethod according to another exemplary implementation. The datatransmission method can be applied to the implementation environmentshown in FIG. 1, and the data transmission method can include thefollowing implementation acts.

In act 601, a first PDCCH is monitored according to a first PDCCHmonitoring mode.

As an example, a PDCCH monitoring period of a search space correspondingto the first PDCCH monitoring mode is greater than or equal to one timeslot. For example, a monitoring occasion interval corresponding to thefirst PDCCH monitoring mode includes M time slots, and M>0. It can alsobe considered that the first PDCCH monitoring mode is a slot basedmonitoring occasion mode, that is, the monitoring occasion interval isin units of time slots. In this case, the monitoring occasion intervalof the UE is large, that is to say, the second PDCCH monitoring mode isnot of frequent monitoring. It is generally considered that the UE iscurrently in Phase C in this case, that is, the UE may need to beswitched from Phase C to Phase A.

The monitoring result of the first PDCCH may include various situations,for example, the first PDCCH may or may not be detected. Optionally,when the first PDCCH is detected, the first PDCCH may or may not carryCOT indication information, or may also carry DCI for data scheduling.

In act 602, a target DCI carried by the first PDCCH is acquired when thefirst PDCCH is detected by the first PDCCH monitoring mode.

Here, the first time information can be determined through act 602 andact 603. First, when the UE detects that the first PDCCH carries thetarget DCI, it can acquire the target DCI.

In act 603, the first time information is determined according to thetarget DCI.

As an example, when the target DCI is used for data scheduling, theimplementation of determining the first time information according tothe target DCI may include: determining the first time informationaccording to scheduling information, wherein the scheduling informationis carried by the target DCI or determined by the received secondconfiguration information.

That is, when the target DCI is used for data scheduling, the UE canacquire scheduling information to determine the first time informationaccording to the scheduling information. As an example, the UE canobtain the scheduling information from the target DCI, that is, thescheduling information is carried by the target DCI, or it can alsoobtain the scheduling information from the received second configurationinformation, which can be the same as or different from the firstconfiguration information. For example, the second configurationinformation can be higher layer signaling, that is, the schedulinginformation can also be pre-configured to the UE by the access networkdevice through higher layer signaling. As an example, the higher layersignaling may be RRC signaling, etc.

Furthermore, since the target DCI may be scheduled by a PDSCH (physicaldownlink shared channel) or PUSCH (physical uplink shared channel), thespecific implementation of determining the first time informationaccording to the scheduling information may include the followingpossible implementations:

As an example, when the target DCI is scheduled by a PDSCH, a firstparameter value indicating the number of time slots between a PDCCH anda PDSCH and a second parameter value indicating the number of time slotsbetween a PDSCH and a physical uplink control channel (PUCCH) in thetarget DCI are acquired, and the first time information is determinedaccording to the first parameter value and the second parameter value.

When the access network device schedules downlink data transmissionthrough a target DCI of a downlink grant, the scheduling informationcarries a TDRA (Time Domain Resource Allocation) field, which is usually4 bits and can carry configuration information indicating 16 differentrows in a resource allocation table, wherein each row contains differentresource allocation combinations. In addition, the schedulinginformation may also include a first parameter value for indicating thenumber of time slots between the PDCCH and PDSCH, which is generallyexpressed by K0. In addition, since the UE needs to feedback ACK(Acknowledgement)/NACK (Negative Acknowledgement) after receiving thePDSCH, the access network device usually further indicates the slotposition and the PUCCH resource for transmitting the ACK/NACKcorresponding to the PDSCH in the scheduling information, that is, thescheduling information also includes a second parameter value forindicating the number of time slots between the PDSCH and the PUCCH. Forexample, the second parameter value can be expressed as K1. For example,if the PDSCH is transmitted in time slot N, if the value of K1 is 4, itmeans that the corresponding feedback information ACK/NACK istransmitted in time slot n+4. Further, the configuration information ofthe PUCCH resource can be used for indicating a row in the predefinedresource list, including time domain resources, frequency domainresources and spreading sequence resources of the PUCCH in a time slot(the spreading sequence resources exist for some PUCCH formats, but arenot needed for some PUCCH formats).

In this way, the UE can obtain the first parameter value and the secondparameter value, that is, K0 and K1, from the scheduling information,and then determine the first time information according to the K0 andK1.

As an example, the specific implementation of determining the first timeinformation according to the first parameter value and the secondparameter value may include determining the first time information byformula (1) based on the first parameter value and the second parametervalue:T2=K0+K1+1−S1−S2  (1)

The above T2 is the first time information, S1 refers to the number ofsymbols occupied by a PDCCH time-frequency resource, and S2 refers tothe number of symbols between the last symbol occupied by the PUCCH andthe end position of a time slot.

Of course, the above implementation of determining the first timeinformation according to the first parameter value and the secondparameter value is only exemplary. In another implementation, the firsttime information can be determined according to the first parametervalue and the second parameter value in other ways. For example, thefirst time information can also be determined according to the followingformula (2) based on the first parameter value and the second parametervalue:T2=K0+K1+1  (2)

It should be noted that the above description only takes the firstparameter value and the second parameter value determined according tothe scheduling information as an example. In another implementation, thefirst parameter value and the second parameter value may also bedetermined according to a predefined rule, which is not limited by theimplementation of the present disclosure.

As an example, when the target DCI is scheduled by a PUSCH, a thirdparameter value used for indicating the number of offset time slotsbetween a time slot where the target DCI is located and a time slotwhere PUSCH is located in the scheduling information is acquired, andthe first time information is determined according to the thirdparameter value.

When the access network device schedules uplink data transmission usinga target DCI of a uplink grant, the scheduling information carries aTDRA field, which is usually 4 bits and can carry configurationinformation indicating 16 different rows in a resource allocation table,wherein each row contains different resource allocation combinations. Inaddition, the scheduling information may also include a third parametervalue for the number of offset time slots between a time slot where thetarget DCI is located and a time slot where PUSCH is located. The thirdparameter value is generally expressed by K2. In this way, the UE canobtain the third parameter value, that is, K2, from the schedulinginformation, and then determine the first time information according toK2.

As an example, the specific implementation of determining the first timeinformation according to the third parameter value may includedetermining the first time information by formula (3) based on the thirdparameter value:T2=K2+1−S1−S2  (3)

The above T2 is the first time information, S1 refers to the number ofsymbols occupied by a PDCCH time-frequency resource, and S2 refers tothe number of symbols between the last symbol occupied by the PUCCH andthe end position of a time slot.

Of course, the above implementation of determining the first timeinformation according to the third parameter value is only exemplary. Inanother implementation, the first time information can be determinedaccording to the third parameter value in other ways. For example, thefirst time information can also be determined according to the followingformula (4) based on the third parameter value:T2=K2+1  (4)

As an example, when the first time information is used for indicating athird period, the starting point of the third period may be the endingtime point of the last symbol of the control resource set of the firstPDCCH. For example, as shown in FIG. 7, the starting point of the thirdperiod is time A in FIG. 7.

As an example, when the first time information can also indicate atarget moment, for example, please refer to FIG. 8, the target moment ismoment A in FIG. 8.

In addition, it should be noted that the above description only takesthe third parameter value determined according to the schedulinginformation as an example, and in another implementation, the thirdparameter value may also be determined according to a predefined rule.

In act 604, ending time of monitoring the first PDCCH according to thefirst PDCCH monitoring mode is determined according to a monitoringresult of the first PDCCH and first time information.

As an example, the specific implementation of determining, according tothe monitoring result of the first PDCCH and the first time information,the ending time of monitoring the first PDCCH according to the firstPDCCH monitoring mode, may include: when the first time information isused for indicating a third period, determining that the end point ofthe third period is the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode if the end point of thethird period arrives, and the channel occupation time (COT) indicationinformation has not been received on the first PDCCH.

For example, please refer to FIG. 7, when the first time information isused for indicating the third period, from the starting point of thethird period, the UE performs time counting, and before the counted timeexceeds the third period, the UE monitors the first PDCCH by using thefirst PDCCH monitoring mode. If COT indication information is detectedor if a GC-PDCCH (Group Common PDCCH) carrying COT indicationinformation is detected, in this case, the UE can determine, accordingto the COT indication information, the ending time of monitoring thefirst PDCCH according to the first PDCCH monitoring mode. On thecontrary, when the counted time reaches the third period and COTindication information has not been received in the third period, itmeans that the access network device may not successfully preempt thechannel or the UE misses monitoring the first PDCCH. In this case, whenthe counted time reaches the third period, for example, when the momentB reaches the third period as referred in FIG. 7, the UE determines thatthe end point B of the third period is the ending time of monitoring thefirst PDCCH according to the first PDCCH monitoring mode.

As an example, the specific implementation of determining, according tothe monitoring result of the first PDCCH and the first time information,the ending time of monitoring the first PDCCH according to the firstPDCCH monitoring mode, may include: when the first time information isused for indicating a target moment, if channel occupation time (COT)indication information is not received on the first PDCCH when thetarget moment arrives, determining that the target moment is the endingtime of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

For example, please refer to FIG. 8, when the first time informationindicates a target moment, if COT indication information is detectedbefore the target moment or if a GC-PDCCH carrying COT indicationinformation is detected, then the UE can determine, according to the COTindication information, the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode. On the contrary, if theCOT indication information is still not detected when the target momentarrives, it means that the access network device may not successfullypreempt the channel or the UE misses monitoring the first PDCCH. In thiscase, when the target time such as moment A in FIG. 8 arrives, the UEdetermines that moment A in FIG. 8 is the ending time of monitoring thefirst PDCCH according to the first PDCCH monitoring mode.

In act 605, a second PDCCH is monitored according to a second PDCCHmonitoring mode after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

As an example, please refer to FIG. 7 or 8, the UE monitors the secondPDCCH by the second PDCCH monitoring mode at the boundary of the firsttime slot after the first time information. In other words, the timingof switching to the second PDCCH monitoring mode may be the boundary ofthe first time slot after the determined ending time, or the boundary ofthe earliest time slot after the determined ending time. The boundary ofthe first time slot after the first period can be determined by thesecond PDCCH monitoring occasion determined by the second PDCCHmonitoring mode.

In an implementation of the present disclosure, a first PDCCH ismonitored according to a first PDCCH monitoring mode, and ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring modeis determined according to a monitoring result of the first PDCCH andfirst time information. In other words, the switch of the PDCCHmonitoring mode is determined according to the monitoring result and thefirst time information instead of relying solely on the COT indicationinformation, so that the problem that UE cannot enter another channelreceiving phase due to missing monitoring the COT indication informationand other reasons can be avoided, and the probability of successful datatransmission is improved.

Please refer to FIG. 9, which is a flow chart of a data transmissionmethod according to another exemplary implementation. The datatransmission method can be applied to the implementation environmentshown in FIG. 1, and the data transmission method can include thefollowing implementation acts.

In act 901, a first PDCCH is monitored according to a first PDCCHmonitoring mode.

As an example, a PDCCH monitoring period of a search space correspondingto the first PDCCH monitoring mode is greater than or equal to one timeslot. For example, a monitoring occasion interval corresponding to thefirst PDCCH monitoring mode includes M time slots, and M>0. It can alsobe considered that the first PDCCH monitoring mode is a slot basedmonitoring occasion mode, that is, the monitoring occasion interval isin units of time slots. In this case, the monitoring occasion intervalof the UE is large, that is to say, the second PDCCH monitoring mode isnot of frequent monitoring. It is generally considered that the UE iscurrently in Phase C in this case, that is, the UE may need to beswitched from Phase C to Phase A.

The monitoring result of the first PDCCH may include various situations,for example, the first PDCCH may or may not be monitored. Optionally,when the first PDCCH is monitored, the first PDCCH may or may not carryCOT indication information, or may also carry DCI for data scheduling.

In act 902, a target DCI carried by the first PDCCH is acquired when thefirst PDCCH is detected by the first PDCCH monitoring mode.

Here, the first time information can be determined through act 902 andact 903. First, when the UE detects that the first PDCCH carries thetarget DCI, it can acquire the target DCI.

In act 903, the first time information is determined according to thetarget DCI.

As an example, the first time information is determined according toindication information in the target DCI. In other words, compared withthe existing communication system technology, the target DCI has addedindication information for indicating the time slot offset between thetime slot where the first PDCCH is located and the first timeinformation, and the UE obtains the indication information. For example,assuming that the time slot where the first PDCCH is located is n andthe indication information is 4, it can be determined that the firsttime information is n+4.

As an example, the indication information is second period, the secondperiod is used for determining the first time information, and thesecond period is any one of at least one second period predefined.

In other words, the indication information can be directly periodinformation, at least one period information can be predefined, and theindication information can include any one of at least one predefinedperiod information.

In act 904, ending time of monitoring the first PDCCH according to thefirst PDCCH monitoring mode is determined according to a monitoringresult of the first PDCCH and first time information.

As an example, the specific implementation of determining, according tothe monitoring result of the first PDCCH and the first time information,the ending time of monitoring the first PDCCH according to the firstPDCCH monitoring mode, may include: when the first time information isused for indicating a first moment, if channel occupation time (COT)indication information is not received on the first PDCCH when the firstmoment arrives, determining that the first moment is the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

If COT indication information is detected before the first momentarrives or if a GC-PDCCH carrying COT indication information isdetected, then the UE can determine, according to the COT indicationinformation, the ending time of monitoring the first PDCCH according tothe first PDCCH monitoring mode. On the contrary, if the COT indicationinformation is still not detected at the first moment, it means that theaccess network device may not successfully preempt the channel or the UEmisses monitoring the first PDCCH. In this case, when the first timearrives, for example, refer to FIG. 8, the UE determines the first time(such as moment A) as the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

In act 905, a second PDCCH is monitored according to a second PDCCHmonitoring mode after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

As an example, please refer to FIG. 8, the UE monitors the second PDCCHby the second PDCCH monitoring mode at the boundary of the first timeslot after the first time information. In other words, the timing ofswitching to the second PDCCH monitoring mode may be the boundary of thefirst time slot after the determined ending time, or the boundary of theearliest time slot after the determined ending time. The boundary of thefirst time slot after the first time information can be determined bythe second PDCCH monitoring occasion determined by the second PDCCHmonitoring mode.

In an implementation of the present disclosure, a first PDCCH ismonitored according to a first PDCCH monitoring mode, and ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring modeis determined according to a monitoring result of the first PDCCH andfirst time information. In other words, the switch of the PDCCHmonitoring mode is determined according to the monitoring result and thefirst time information instead of relying solely on the COT indicationinformation, so that the problem that UE cannot enter another channelreceiving phase due to missing monitoring the COT indication informationand other reasons can be avoided, and the probability of successful datatransmission is improved.

Please refer to FIG. 10, which is a flow chart of a data transmissionmethod according to an exemplary implementation. The data transmissionmethod can be applied to the implementation environment shown in FIG. 1,and the data transmission method can include the following acts:

In act 1001, a demodulation reference signal (DMRS) is monitored.

UE can monitor a demodulation reference signal (DMRS) before monitoringa PDCCH. Exemplarily, the DMRS may be a broadband DMRS.

Furthermore, if the UE detects the DMRS, it means that it is currentlyin the COT, that is, the access network device successfully preempts thechannel; otherwise, if the UE does not detect DMRS, it means that it isnot currently in the COT.

In act 1002, according to the monitoring result of the DMRS and thesecond time information, the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode is determined.

Exemplarily, the second time information is determined by received thirdconfiguration information or predefined. Further, when the second timeinformation is determined by the received third configurationinformation, and the third configuration information, such as RRCsignaling, may be sent by the access network device. The thirdconfiguration information may be different from the first configurationinformation and the second configuration information, or may be the sameas the first configuration information or the second configurationinformation.

As an example, the specific implementation of determining, according tothe monitoring result of the DMRS and the second time information, theending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode, may include: when the second time information is usedfor indicating a second moment, if the DMRS is detected, determiningthat the second moment is the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode.

It should be noted that the above description only takes the second timeinformation used for indicating the second moment as an example. Inanother implementation, the second time information can also be used forindicating period. In this case, if the DMRS is detected within periodindicated by the second time information, then it is determined that theend point of the period indicated by the second time information is theending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

After the DMRS is detected, the second time information can be startedaccordingly. For example, when the second time information indicatesperiod, the starting point of the period indicated by the second timeinformation can be the symbol position where the DMRS is detected or itsadjacent symbol position. Thereafter, the ending time of monitoring thefirst PDCCH according to the first PDCCH monitoring mode can bedetermined according to the second information.

Furthermore, after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode, the DMRS is monitoredaccording to the target monitoring mode.

In other words, after the ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode, the UE can continue tomonitor a DMRS according to the target monitoring mode instead ofdirectly monitoring the second PDCCH according to the second PDCCHmonitoring mode. Exemplarily, when the UE detects the DMRS according tothe target monitoring mode, it can monitor the second PDCCH according tothe second PDCCH monitoring mode, that is, it enter the Phase A.

In the implementation of the present disclosure, the DMRS is monitored,and the ending time of monitoring the first PDCCH according to the firstPDCCH monitoring mode is determined according to the monitoring resultof the DMRS and the second time information. In other words, the switchof the PDCCH monitoring mode is determined according to the monitoringresult of the DMRS and the second time information instead of relyingsolely on the COT indication information, so that the problem that UEcannot enter another channel receiving phase due to missing monitoringthe COT indication information and other reasons can be avoided, and theprobability of successful data transmission is improved.

Please refer to FIG. 11, which is a flow chart of a data transmissionmethod according to another exemplary implementation. The datatransmission method can be applied to the implementation environmentshown in FIG. 1, and the data transmission method can include thefollowing implementation acts:

In act 1101, a second PDCCH is monitored according to a second PDCCHmonitoring mode.

In this case, when the monitoring occasion interval of the second PDCCHmonitoring mode is smaller than that of the first PDCCH monitoring mode,it is generally considered that the UE is currently in Phase A and needsto be switched from Phase A to Phase C.

In act 1102, switch from a second PDCCH monitoring mode to a first PDCCHmonitoring mode is determined according to a monitoring result of thesecond PDCCH and third time information.

In order to avoid that UE is always in Phase A and cannot enter Phase Cdue to missing monitoring COT indication information, the third timeinformation can be set.

Exemplary, if the COT indication information is not received on thesecond PDCCH within the time indicated by the third time information,the current second PDCCH monitoring mode is switched to the first PDCCHmonitoring mode, and the second PDCCH monitoring mode is different fromthe first PDCCH monitoring mode.

As an example, the third time information may be determined by receivedfourth configuration information or predefined. Further, the fourthconfiguration information is sent by the access network device, and thefourth configuration information may be, but is not limited to, RRCsignaling and broadcast information, which is not limited by theimplementation of the present disclosure.

The fourth configuration information may be different from the firstconfiguration information, the second configuration information and thethird configuration information, or the fourth configuration informationmay be the same as the first configuration information, the secondconfiguration information or the third configuration information, whichis not limited by the implementation of the present disclosure.

It should be noted that the above description is only based on theexample where the third time information is determined by the receivedfourth configuration information or predefined. In anotherimplementation, the third time information can also be determinedaccording to a preset rule, which is not limited by the implementationof the present disclosure.

As an example, the starting point of the period indicated by the thirdtime information is the starting time of monitoring the second PDCCH bythe second PDCCH monitoring mode. For example, please refer to FIG. 12,and the starting point of the period indicated by the third timeinformation is moment A in FIG. 12.

The UE performs time counting from the starting point of the periodindicated by the third time information, and if the counted time doesnot exceed the period indicated by the third time information, the UEmonitors the second PDCCH in the second PDCCH monitoring mode. If theCOT indication information is detected, the time counting operation canbe terminated. In this case, the UE can be switched from Phase A toPhase C according to the COT indication information, so the subsequentswitching of the channel receiving mode can be stopped according to theperiod indicated by the third time information.

On the contrary, when the counted time reaches the period indicated bythe third time information and the COT indication information has notbeen received within this period, it means that the access networkdevice may not successfully preempt the channel, or the UE missedmonitoring the second PDCCH. In this case, when the counted time reachesthe period, such as moment B in FIG. 12, the UE is switched from thecurrent second PDCCH monitoring mode to the first PDCCH monitoring mode,that is, from Phase A to Phase C.

It is worth mentioning that, on the one hand, when the access networkdevice does not preempt the channel for a long time, the UE can reducethe PDCCH monitorion frequency, thereby saving the power consumption ofthe UE; On the other hand, the problem that the behavior of the UEreceiving the PDCCH cannot be changed correspondingly due to missingmonitoring the PDCCH can also be avoided, that is, it can be avoidedthat UE always monitors the second PDCCH according to the second PDCCHmonitoring mode.

In act 1103, a first PDCCH is monitored by the first PDCCH monitoringmode.

As an example, please refer to FIG. 12, the UE monitors a PDCCH usingthe first PDCCH monitoring mode at the boundary of the first time slotafter the period indicated by the third time information, that is, thetiming of switching to the first PDCCH monitoring mode can be theboundary of the first time slot after a predetermined time, or theboundary of the earliest time slot after the predetermined time. Theboundary of the first time slot after the period indicated by the thirdtime information is the PDCCH monitoring occasion determined by thefirst PDCCH monitoring mode.

In the implementation of the present disclosure, when the COT indicationinformation on the second PDCCH is not detected within the timeindicated by the third time information, the UE no longer adopts thecurrent second PDCCH monitoring mode for monitorion, but is switched tothe first PDCCH monitoring mode for monitorion, so as to avoid that theUE cannot enter another channel receiving phase due to reasons such asmissing monitoring the COT indication information, so that the data canbe successfully transmitted.

FIG. 13 is a schematic structural diagram of an apparatus for datatransmission according to an exemplary implementation. The apparatus canbe configured in UE, and the UE can include: a first monitorion module1310 and a first determining module 1320.

The first monitorion module 1310 is configured to monitor a firstphysical downlink control channel (PDCCH) according to a first PDCCHmonitoring mode.

The first determining module 1320 is configured to determine, accordingto a monitoring result of the first PDCCH and first time information,ending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

In a possible implementation of the present disclosure, the first timeinformation includes first period, and the first period is determined byreceived first configuration information or predefined.

In a possible implementation of the present disclosure, a starting pointof the first period is determined by target monitoring occasion formonitoring the first PDCCH according to the first PDCCH monitoring mode,wherein the first PDCCH carrying a common DCI is not detected or thefirst PDCCH carrying a target DCI is detected at the target monitoringoccasion.

In a possible implementation of the present disclosure, the firstdetermining module 1320 is further configured to acquire a target DCIcarried by the first PDCCH when the first PDCCH is detected by the firstPDCCH monitoring mode; and determine the first time informationaccording to the target DCI.

In a possible implementation of the present disclosure, the firstdetermining module 1320 is configured to determine the first timeinformation according to scheduling information when the target DCI isused for scheduling data, wherein the scheduling information is carriedby the target DCI or determined by the received second configurationinformation.

In a possible implementation of the present disclosure, the firstdetermining module 1320 is configured to, when the target DCI is usedfor scheduling a physical downlink shared channel (PDSCH), acquire afirst parameter value indicating the number of time slots between aPDCCH and a PDSCH and a second parameter value indicating the number oftime slots between a PDSCH and a physical uplink control channel (PUCCH)in the scheduling information; and determine the first time informationaccording to the first parameter value and the second parameter value.

In a possible implementation of the present disclosure, the firstdetermining module 1320 is configured to, when the target DCI is usedfor scheduling a physical uplink shared channel (PUSCH), acquire a thirdparameter value used for indicating the number of offset time slotsbetween a time slot where the target DCI is located and a time slotwhere PUSCH is located in the scheduling information; and determine thefirst time information according to the third parameter value.

In a possible implementation of the present disclosure, the firstdetermining module 1320 is configured to determine the first timeinformation according to indication information in the target DCI.

In a possible implementation of the present disclosure, the indicationinformation is second period, the second period is used for determiningthe first time information, and the second period is any one of at leastone second period predefined.

In a possible implementation of the present disclosure, the firstdetermining module 1320 is configured to: when the first timeinformation is used for indicating a first moment, if channel occupationtime (COT) indication information is not received on the first PDCCHwhen the first moment arrives, determine that the first moment is theending time of monitoring the first PDCCH according to the first PDCCHmonitoring mode.

In a possible implementation of the present disclosure, the firstmonitorion module 1310 is further configured to: monitore a second PDCCHaccording to a second PDCCH monitoring mode after the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

In an implementation of the present disclosure, a first PDCCH ismonitored according to a first PDCCH monitoring mode, and ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring modeis determined according to a monitoring result of the first PDCCH andfirst time information. In other words, the switch of the PDCCHmonitoring mode is determined according to the monitoring result and thefirst time information instead of relying solely on the COT indicationinformation, so that the problem that UE cannot enter another channelreceiving phase due to missing monitoring the COT indication informationand other reasons can be avoided, and the probability of successful datatransmission is improved.

FIG. 14 is a schematic structural diagram of an apparatus for datatransmission according to an exemplary implementation. The apparatus canbe configured in UE, and the UE can include: a second monitorion module1410 and a second determining module 1420.

The second monitorion module 1410 is configured to monitore ademodulation reference signal (DMRS).

The second determining module 1420 is configured to determine, accordingto a monitoring result of the DMRS and second time information, endingtime of monitoring a first PDCCH according to a first PDCCH monitoringmode.

In a possible implementation of the present disclosure, the second timeinformation is determined by received third configuration information orpredefined.

In a possible implementation of the present disclosure, the seconddetermining module 1420 is configured to: when the second timeinformation is used for indicating a second moment, if the DMRS isdetected, determine that the second moment is the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

In a possible implementation of the present disclosure, the secondmonitorion module 1410 is further configured to: monitor a DMRSaccording to a target monitoring mode after the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring mode.

In this implementation, the DMRS is monitored, and the ending time ofmonitoring the first PDCCH according to the first PDCCH monitoring modeis determined according to the monitoring result of the DMRS and thesecond time information. In other words, the switch of the PDCCHmonitoring mode is determined according to the monitoring result of theDMRS and the second time information instead of relying solely on theCOT indication information, so that the problem that UE cannot enteranother channel receiving phase due to missing monitoring the COTindication information and other reasons can be avoided, and theprobability of successful data transmission is improved.

Referring to FIG. 15, FIG. 15 is a schematic structural diagram of UEaccording to an exemplary implementation of the present disclosure. TheUE includes a processor 1501, a receiver 1502, a transmitter 1503, amemory 1504 and a bus 1505.

The processor 1501 includes one or more processing cores. The processor1501 performs various functional applications and information processingby running software programs and modules.

The receiver 1502 and the transmitter 1503 can be implemented as acommunication component, which can be a communication chip.

The memory 1504 is connected to the processor 1501 via the bus 1505.

The memory 1504 may be configured to store at least one instruction, andthe processor 1501 is configured to execute the at least oneinstruction, so as to implement various acts executed by the UE invarious method implementations described above.

In addition, the memory 1504 may be implemented by any type oftransitory or non-transitory storage device or a combination thereof.The transitory or non-transitory storage device may include, but notlimited to, a magnetic disk or an optical disk, an electrically erasableprogrammable read only memory (EEPROM), an erasable programmable readonly memory (EPROM), a static random access memory (SRAM), a read onlymemory (ROM), a magnetic memory, a flash memory, and a programmable readonly memory (PROM).

The present disclosure provides a computer-readable storage medium, thestorage medium stores at least one instruction, and the at least oneinstruction is loaded and executed by the processor to implement thedata transmission method provided by various method implementationsdescribed above.

The present disclosure also provides a computer program product. Thecomputer program product, when running on a computer, causes thecomputer to execute the data transmission method provided by variousmethod implementations described above.

One of ordinary skilled in the art may understand that all or part ofthe acts for implementing the implementations may be completed usinghardware, or related hardware may be instructed by programs, which maybe stored in a computer-readable storage medium, which may be aread-only memory, a magnetic disk, or an optical disk, etc.

The above description is only the preferred implementations of thepresent disclosure, and is not intended to limit the present disclosure.Any modification, equivalent substitution, improvement, etc., madewithin the spirit and principles of the present disclosure shall beincluded in the scope of protection of the present disclosure.

What is claimed is:
 1. A method for data transmission, applied to userequipment (UE), comprising: starting monitoring a first physicaldownlink control channel (PDCCH) using a first PDCCH monitoring mode;determining, according to a monitoring result of the first PDCCH andfirst time information, an ending time of monitoring the first PDCCHaccording to the first PDCCH monitoring mode; and monitoring a secondPDCCH by a second PDCCH monitoring mode after the ending time.
 2. Themethod according to claim 1, wherein: the first time informationcomprises a first period, and the first period is configured by receivedfirst configuration information; and monitoring the second PDCCH by thesecond PDCCH monitoring mode after the ending time comprises: monitoringthe second PDCCH by the second PDCCH monitoring mode after an endingtime of the first period.
 3. The method according to claim 2, whereinthe first configuration information is a radio resource control (RRC)signaling.
 4. The method according to claim 2, wherein a starting pointof the first period is determined by a target monitoring occasion formonitoring the first PDCCH according to the first PDCCH monitoring mode,wherein a first PDCCH carrying target DCI is detected in the targetmonitoring occasion.
 5. The method according to claim 2, wherein astarting point of the first period is an ending time point of a lastsymbol of control resource sets of a target monitoring occasion.
 6. Themethod according to claim 2, further comprising: monitoring a secondPDCCH by switching the first PDCCH monitoring mode to a second PDCCHmonitoring mode; wherein timing of switching to the second PDCCHmonitoring mode is a boundary of a first time slot after an ending timeof the first period.
 7. The method according to claim 6, wherein thetiming of switching to the second PDCCH monitoring mode is a leftboundary of the first time slot after the ending time of the firstperiod.
 8. The method according to claim 1, wherein the first PDCCHmonitoring mode corresponds to a first search space, and the secondPDCCH monitoring mode corresponds to a second search space.
 9. Themethod according to claim 8, wherein a monitoring occasion intervalcorresponding to the first PDCCH monitoring mode is different from amonitoring occasion interval corresponding to the second PDCCHmonitoring mode.
 10. The method of claim 1, further comprising:acquiring a set of values comprising a first parameter value indicatingthe number of time slots between the PDCCH and a physical downlinkshared channel (PDSCH), a second parameter value indicating the numberof time slots between the PDSCH and a physical uplink control channel(PUCCH); and determining first time information based on a sum of thefirst parameter value and the second parameter value.
 11. The method ofclaim 1, further comprising: obtaining a first number of symbolsoccupied by a PDCCH time-frequency resource of the PDCCH using the firstPDCCH monitoring mode; and obtaining a second number of symbols betweena last symbol occupied by a physical uplink control channel (PUCCH) andan end position of a time slot, wherein determining the first timeinformation comprises determining the first time information based on afirst sum, the first number of symbols, and the second number ofsymbols, wherein: the first sum is a sum of the first parameter valueand the second parameter value; the first parameter value indicates thenumber of time slots between the PDCCH and a physical downlink sharedchannel (PDSCH); and the second parameter value indicates the number oftime slots between the PDSCH and the PUCCH.
 12. A device, comprising aprocessor, a receiver, a transmitter, a memory and a bus, wherein thereceiver and the transmitter are implemented as a communicationcomponent, the memory is connected to the processor via the bus and isconfigured to store at least one instruction, and the processor isconfigured to execute the at least one instruction to: start monitoringa first physical downlink control channel (PDCCH) using a first PDCCHmonitoring mode; determine, according to a monitoring result of thefirst PDCCH and first time information, an ending time of monitoring thefirst PDCCH according to the first PDCCH monitoring mode; and monitor asecond PDCCH by a second PDCCH monitoring mode after the ending time.13. The device according to claim 12, wherein the first time informationcomprises first period, and the first period is configured by receivedfirst configuration information.
 14. The device according to claim 13,wherein a starting point of the first period is determined by a targetmonitoring occasion for monitoring the first PDCCH according to thefirst PDCCH monitoring mode, wherein a first PDCCH carrying target DCIis detected in the target monitoring occasion.
 15. The device accordingto claim 13, wherein a starting point of the first period is an endingtime point of a last symbol of control resource sets of a targetmonitoring occasion.
 16. The device according to claim 13, the processoris configured to execute the at least one instruction to: monitor asecond PDCCH by a second PDCCH monitoring mode after an ending time ofthe first period.
 17. The device according to claim 13, the processor isconfigured to execute the at least one instruction to: monitor a secondPDCCH by switching the first PDCCH monitoring mode to a second PDCCHmonitoring mode; wherein timing of switching to the second PDCCHmonitoring mode is a boundary of a first time slot after an ending timeof the first period.
 18. The device according to claim 17, wherein thetiming of switching to the second PDCCH monitoring mode is a leftboundary of the first time slot after the ending time of the firstperiod.
 19. The device according to claim 16, wherein the first PDCCHmonitoring mode corresponds to a first search space, and the secondPDCCH monitoring mode corresponds to a second search space.
 20. Thedevice according to claim 19, wherein a monitoring occasion intervalcorresponding to the first PDCCH monitoring mode is different from amonitoring occasion interval corresponding to the second PDCCHmonitoring mode.
 21. A non-transitory computer-readable storage medium,wherein the computer-readable storage medium stores an instruction, whenexecuted by a processor, enabling the processor to: start monitoring afirst physical downlink control channel (PDCCH) using a first PDCCHmonitoring mode; determine, according to a monitoring result of thefirst PDCCH and first time information, an ending time of monitoring thefirst PDCCH according to the first PDCCH monitoring mode; and monitoringa second PDCCH by a second PDCCH monitoring mode after the ending time.